I don't know this turntable, so this response may not apply. I take it the platter is suspended. You say you've had other turntables that were not that bad. Were they suspension tables? If so, the springs on this table may account for the difference. To the extent that they are adjustable, you could try putting more weight on the platter and increasing the tension on the springs to get less bounce. You could experiment with, for example, a small vase that might weigh two or three pounds. Center it mouth down over the spindle to see how the turntable reacts to the weight. If you can get the platter at the right height, then you might want to consider buying a weight or clamp, or a heavier mat, or even a ring, or some combination of these. Any of these might also improve the sound, and the ring does help to flatten any small warps.